markg Posted December 29, 2014 Report Share Posted December 29, 2014 Hey all, Just started a long overdue restore on my TY175 in Australia. The engine will be rebored with a Wossner piston. Is there any differences between the model 525 barrel and the 1N4 barrel? I have a spare 1N4 barrel that will take a 1st oversize rebore better than the 525. thanks for any help! Mark G Quote Link to comment Share on other sites More sharing options...
markg Posted January 3, 2015 Author Report Share Posted January 3, 2015 I know the barrels are interchangeable but was wondering if anyone knew if the port timing or sizes were different. Mark G Quote Link to comment Share on other sites More sharing options...
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